The game lags quite a lot on MacBook. Besides that the main problem is that the controls are unresponsive. Pressing Ctrl and immediately pressing Space doesn't make the blink person go-and-jump but this is required to do after the first metal door. I managed to go up eventually though.
Between, you can download game build here on Itch, no need to link to dropbox.
Check out my game (3D-horror) as well: https://nns2009.itch.io/love-full-house